载铁活性炭纤维/Fenton体系降解罗丹明B
Fe-modified activated carbon fiber and its application for Fenton degradation of Rhodamine B
Fenton氧化技术是一种成本低廉，反应易进行且反应效率较高的高级氧化技术。其中，非均相Fenton体系相对于传统Fenton体系而言，pH适用范围有极大的拓展。将各种形态铁的化合物负载到具有多孔结构的载体上，可制备性能高效的非均相催化剂。本文采用原位合成法和两步物理化学活化法制备了载铁活性炭纤维（ACF-Fe），表征结果表明，催化剂中的铁元素以Fe3O4的形态存在，Fe元素的相对含量为8.0%。ACF-Fe材料具有微孔结构，其比表面积高达432 m2/g。在无光照条件下，ACF-Fe/H2O2芬顿体系能有效将100 mg/L的RhB溶液脱色完全，且炭化率达到70 %以上。通过荧光光谱，捕获实验等对该体系降解RhB的过程进行了研究，并提出了一种可能的机理。
n efficient Fe-modified activated carbon fiber (ACF-Fe) was successfully prepared as a heterogeneous catalyst for Fenton egradation of Rhodamine B by in situ physical and chemical activation method. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis confirm the existence of the Fe3O4 nanoparticles in the ACF-Fe catalyst. N2 adsorption-desorption analysis shows the specific surface area of the ACF-Fe could reach 432 m2/g. It is a typical microporous material. The catalytic activity of the ACF-Fe catalyst was evaluated by the degradation of Rhodamine B (RhB 100 mg/L) in the presence of hydrogen peroxide (H2O2) in the dark. The removal rate of RhB was over 95 % and the COD removal percentage was over 75 % by ACF-Fe/H2O2 Fenton system. Moreover, the catalyst still showed good catalytic property after being recycled for five times. Finally, a possible catalytic mechanism was proposed.
张高科、陈龙、汤丹丹
化学纤维工业有机化学工业环境污染、环境污染防治
环境科学活性炭纤维四氧化三铁芬顿降解染料
Environmental ScienceCarbon fiberFe3O4FentonDegradationazo dye
张高科,陈龙,汤丹丹.载铁活性炭纤维/Fenton体系降解罗丹明B[EB/OL].(2015-12-08)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201512-444.点此复制
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